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/home/develito/.trash/v6/libraries/src/Document/Document.php

<?php

/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2005 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Document;

use Joomla\Application\AbstractWebApplication;
use Joomla\CMS\Date\Date;
use Joomla\CMS\Factory as CmsFactory;
use Joomla\CMS\WebAsset\WebAssetManager;
use Symfony\Component\WebLink\HttpHeaderSerializer;

// phpcs:disable PSR1.Files.SideEffects
\defined('_JEXEC') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * Document class, provides an easy interface to parse and display a document
 *
 * @since  1.7.0
 */
class Document
{
    /**
     * Document title
     *
     * @var    string
     * @since  1.7.0
     */
    public $title = '';

/**
     * Document description
     *
     * @var    string
     * @since  1.7.0
     */
    public $description = '';

/**
     * Document full URL
     *
     * @var    string
     * @since  1.7.0
     */
    public $link = '';

/**
     * Document base URL
     *
     * @var    string
     * @since  1.7.0
     */
    public $base = '';

/**
     * Contains the document language setting
     *
     * @var    string
     * @since  1.7.0
     */
    public $language = 'en-gb';

/**
     * Contains the document direction setting
     *
     * @var    string
     * @since  1.7.0
     */
    public $direction = 'ltr';

/**
     * Document generator
     *
     * @var    string
     * @since  1.7.0
     */
    public $_generator = 'Joomla! - Open Source Content Management';

/**
     * Document modified date
     *
     * @var    string|Date
     * @since  1.7.0
     */
    public $_mdate = '';

/**
     * Tab string
     *
     * @var    string
     * @since  1.7.0
     */
    public $_tab = "\11";

/**
     * Contains the line end string
     *
     * @var    string
     * @since  1.7.0
     */
    public $_lineEnd = "\12";

/**
     * Contains the character encoding string
     *
     * @var    string
     * @since  1.7.0
     */
    public $_charset = 'utf-8';

/**
     * Document mime type
     *
     * @var    string
     * @since  1.7.0
     */
    public $_mime = '';

/**
     * Document namespace
     *
     * @var    string
     * @since  1.7.0
     */
    public $_namespace = '';

/**
     * Document profile
     *
     * @var    string
     * @since  1.7.0
     */
    public $_profile = '';

/**
     * Array of linked scripts
     *
     * @var    array
     * @since  1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     */
    public $_scripts = [];

/**
     * Array of scripts placed in the header
     *
     * @var    array
     * @since  1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     */
    public $_script = [];

/**
     * Array of scripts options
     *
     * @var    array
     */
    protected $scriptOptions = [];

/**
     * Array of linked style sheets
     *
     * @var    array
     * @since  1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     */
    public $_styleSheets = [];

/**
     * Array of included style declarations
     *
     * @var    array
     * @since  1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     */
    public $_style = [];

/**
     * Array of meta tags
     *
     * @var    array
     * @since  1.7.0
     */
    public $_metaTags = [];

/**
     * The rendering engine
     *
     * @var    object
     * @since  1.7.0
     */
    public $_engine = null;

/**
     * The document type
     *
     * @var    string
     * @since  1.7.0
     */
    public $_type = null;

/**
     * Array of buffered output
     *
     * @var    mixed (depends on the renderer)
     * @since  1.7.0
     */
    public static $_buffer = null;

/**
     * Document instances container.
     *
     * @var    array
     * @since  1.7.3
     */
    protected static $instances = [];

/**
     * Media version added to assets
     *
     * @var    string
     * @since  3.2
     */
    protected $mediaVersion = null;

/**
     * Factory for creating JDocument API objects
     *
     * @var    FactoryInterface
     * @since  4.0.0
     */
    protected $factory;

/**
     * Preload manager
     *
     * @var    PreloadManagerInterface
     * @since  4.0.0
     */
    protected $preloadManager = null;

/**
     * The supported preload types
     *
     * @var    array
     * @since  4.0.0
     */
    protected $preloadTypes = ['preload', 'dns-prefetch', 'preconnect', 'prefetch', 'prerender'];

/**
     * Web Asset instance
     *
     * @var    WebAssetManager
     * @since  4.0.0
     */
    protected $webAssetManager = null;

/**
     * Class constructor.
     *
     * @param   array  $options  Associative array of options
     *
     * @since   1.7.0
     */
    public function __construct($options = [])
    {
        if (\array_key_exists('lineend', $options)) {
            $this->setLineEnd($options['lineend']);
        }

if (\array_key_exists('charset', $options)) {
            $this->setCharset($options['charset']);
        }

if (\array_key_exists('language', $options)) {
            $this->setLanguage($options['language']);
        }

if (\array_key_exists('direction', $options)) {
            $this->setDirection($options['direction']);
        }

if (\array_key_exists('tab', $options)) {
            $this->setTab($options['tab']);
        }

if (\array_key_exists('link', $options)) {
            $this->setLink($options['link']);
        }

if (\array_key_exists('base', $options)) {
            $this->setBase($options['base']);
        }

if (\array_key_exists('mediaversion', $options)) {
            $this->setMediaVersion($options['mediaversion']);
        }

if (\array_key_exists('factory', $options)) {
            $this->setFactory($options['factory']);
        } else {
            $this->setFactory(new Factory());
        }

if (\array_key_exists('preloadManager', $options)) {
            $this->setPreloadManager($options['preloadManager']);
        } else {
            $this->setPreloadManager(new PreloadManager());
        }

if (\array_key_exists('webAssetManager', $options)) {
            $this->setWebAssetManager($options['webAssetManager']);
        } else {
            $webAssetManager = new WebAssetManager(CmsFactory::getContainer()->get('webassetregistry'));

$this->setWebAssetManager($webAssetManager);
        }
    }

/**
     * Returns the global Document object, only creating it
     * if it doesn't already exist.
     *
     * @param   string  $type        The document type to instantiate
     * @param   array   $attributes  Array of attributes
     *
     * @return  static  The document object.
     *
     * @since       1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use the \Joomla\CMS\Document\FactoryInterface instead
     *              Example: Factory::getApplication()->getDocument();
     */
    public static function getInstance($type = 'html', $attributes = [])
    {
        $signature = serialize([$type, $attributes]);

if (empty(self::$instances[$signature])) {
            self::$instances[$signature] = CmsFactory::getContainer()->get(FactoryInterface::class)->createDocument($type, $attributes);
        }

return self::$instances[$signature];
    }

/**
     * Set the factory instance
     *
     * @param   FactoryInterface  $factory  The factory instance
     *
     * @return  Document
     *
     * @since   4.0.0
     */
    public function setFactory(FactoryInterface $factory): self
    {
        $this->factory = $factory;

return $this;
    }

/**
     * Set the document type
     *
     * @param   string  $type  Type document is to set to
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setType($type)
    {
        $this->_type = $type;

return $this;
    }

/**
     * Returns the document type
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getType()
    {
        return $this->_type;
    }

/**
     * Get the contents of the document buffer
     *
     * @return  mixed
     *
     * @since   1.7.0
     */
    public function getBuffer()
    {
        return self::$_buffer;
    }

/**
     * Set the contents of the document buffer
     *
     * @param   string  $content  The content to be set in the buffer.
     * @param   array   $options  Array of optional elements.
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setBuffer($content, $options = [])
    {
        self::$_buffer = $content;

return $this;
    }

/**
     * Gets a meta tag.
     *
     * @param   string  $name       Name of the meta HTML tag
     * @param   string  $attribute  Attribute to use in the meta HTML tag
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getMetaData($name, $attribute = 'name')
    {
        // B/C old http_equiv parameter.
        if (!\is_string($attribute)) {
            $attribute = $attribute ? 'http-equiv' : 'name';
        }

if ($name === 'generator') {
            $result = $this->getGenerator();
        } elseif ($name === 'description') {
            $result = $this->getDescription();
        } else {
            $result = $this->_metaTags[$attribute][$name] ?? '';
        }

return $result;
    }

/**
     * Sets or alters a meta tag.
     *
     * @param   string  $name       Name of the meta HTML tag
     * @param   mixed   $content    Value of the meta HTML tag as array or string
     * @param   string  $attribute  Attribute to use in the meta HTML tag
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setMetaData($name, $content, $attribute = 'name')
    {
        // Pop the element off the end of array if target function expects a string or this http_equiv parameter.
        if (\is_array($content) && (\in_array($name, ['generator', 'description']) || !\is_string($attribute))) {
            $content = array_pop($content);
        }

// B/C old http_equiv parameter.
        if (!\is_string($attribute)) {
            $attribute = $attribute ? 'http-equiv' : 'name';
        }

if ($name === 'generator') {
            $this->setGenerator($content);
        } elseif ($name === 'description') {
            $this->setDescription($content);
        } else {
            $this->_metaTags[$attribute][$name] = $content;
        }

return $this;
    }

/**
     * Adds a linked script to the page
     *
     * @param   string  $url      URL to the linked script.
     * @param   array   $options  Array of options. Example: array('version' => 'auto', 'conditional' => 'lt IE 9', 'preload' => array('preload'))
     * @param   array   $attribs  Array of attributes. Example: array('id' => 'scriptid', 'async' => 'async', 'data-test' => 1)
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     *              Example: $wa->registerAndUseScript(...);
     */
    public function addScript($url, $options = [], $attribs = [])
    {
        // Default value for type.
        if (!isset($attribs['type']) && !isset($attribs['mime'])) {
            $attribs['type'] = 'text/javascript';
        }

$this->_scripts[$url]            = isset($this->_scripts[$url]) ? array_replace($this->_scripts[$url], $attribs) : $attribs;
        $this->_scripts[$url]['options'] = isset($this->_scripts[$url]['options']) ? array_replace($this->_scripts[$url]['options'], $options) : $options;

return $this;
    }

/**
     * Adds a script to the page
     *
     * @param   string  $content  Script
     * @param   string  $type     Scripting mime (defaults to 'text/javascript')
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     *              Example: $wa->addInlineScript(...);
     */
    public function addScriptDeclaration($content, $type = 'text/javascript')
    {
        $type = strtolower($type);

if (empty($this->_script[$type])) {
            $this->_script[$type] = [];
        }

$this->_script[$type][md5($content)] = $content;

return $this;
    }

/**
     * Add option for script
     *
     * @param   string  $key      Name in Storage
     * @param   mixed   $options  Scrip options as array or string
     * @param   bool    $merge    Whether merge with existing (true) or replace (false)
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   3.5
     */
    public function addScriptOptions($key, $options, $merge = true)
    {
        if (empty($this->scriptOptions[$key])) {
            $this->scriptOptions[$key] = [];
        }

if ($merge && \is_array($options)) {
            $this->scriptOptions[$key] = array_replace_recursive($this->scriptOptions[$key], $options);
        } else {
            $this->scriptOptions[$key] = $options;
        }

return $this;
    }

/**
     * Get script(s) options
     *
     * @param   string  $key  Name in Storage
     *
     * @return  array  Options for given $key, or all script options
     *
     * @since   3.5
     */
    public function getScriptOptions($key = null)
    {
        if ($key) {
            return (empty($this->scriptOptions[$key])) ? [] : $this->scriptOptions[$key];
        }

return $this->scriptOptions;
    }

/**
     * Adds a linked stylesheet to the page
     *
     * @param   string  $url      URL to the linked style sheet
     * @param   array   $options  Array of options. Example: array('version' => 'auto', 'conditional' => 'lt IE 9', 'preload' => array('preload'))
     * @param   array   $attribs  Array of attributes. Example: array('id' => 'stylesheet', 'data-test' => 1)
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     *              Example: $wa->registerAndUseStyle(...);
     */
    public function addStyleSheet($url, $options = [], $attribs = [])
    {
        // Default value for type.
        if (!isset($attribs['type']) && !isset($attribs['mime'])) {
            $attribs['type'] = 'text/css';
        }

$this->_styleSheets[$url] = isset($this->_styleSheets[$url]) ? array_replace($this->_styleSheets[$url], $attribs) : $attribs;

if (isset($this->_styleSheets[$url]['options'])) {
            $this->_styleSheets[$url]['options'] = array_replace($this->_styleSheets[$url]['options'], $options);
        } else {
            $this->_styleSheets[$url]['options'] = $options;
        }

return $this;
    }

/**
     * Adds a stylesheet declaration to the page
     *
     * @param   string  $content  Style declarations
     * @param   string  $type     Type of stylesheet (defaults to 'text/css')
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     *
     * @deprecated  4.3 will be removed in 7.0
     *              Use WebAssetManager
     *              Example: $wa->addInlineStyle(...);
     */
    public function addStyleDeclaration($content, $type = 'text/css')
    {
        if ($content === null) {
            return $this;
        }

$type = strtolower($type);

if (empty($this->_style[$type])) {
            $this->_style[$type] = [];
        }

$this->_style[$type][md5($content)] = $content;

return $this;
    }

/**
     * Sets the document charset
     *
     * @param   string  $type  Charset encoding string
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setCharset($type = 'utf-8')
    {
        $this->_charset = $type;

return $this;
    }

/**
     * Returns the document charset encoding.
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getCharset()
    {
        return $this->_charset;
    }

/**
     * Sets the global document language declaration. Default is English (en-gb).
     *
     * @param   string  $lang  The language to be set
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setLanguage($lang = 'en-gb')
    {
        $this->language = strtolower($lang);

return $this;
    }

/**
     * Returns the document language.
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getLanguage()
    {
        return $this->language;
    }

/**
     * Sets the global document direction declaration. Default is left-to-right (ltr).
     *
     * @param   string  $dir  The language direction to be set
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setDirection($dir = 'ltr')
    {
        $this->direction = strtolower($dir);

return $this;
    }

/**
     * Returns the document direction declaration.
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getDirection()
    {
        return $this->direction;
    }

/**
     * Sets the title of the document
     *
     * @param   string  $title  The title to be set
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setTitle($title)
    {
        $this->title = $title;

return $this;
    }

/**
     * Return the title of the document.
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getTitle()
    {
        return $this->title;
    }

/**
     * Set the assets version
     *
     * @param   string  $mediaVersion  Media version to use
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   3.2
     */
    public function setMediaVersion($mediaVersion)
    {
        $this->mediaVersion = strtolower($mediaVersion);

return $this;
    }

/**
     * Return the media version
     *
     * @return  string
     *
     * @since   3.2
     */
    public function getMediaVersion()
    {
        return $this->mediaVersion;
    }

/**
     * Set the preload manager
     *
     * @param   PreloadManagerInterface  $preloadManager  The preload manager service
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   4.0.0
     */
    public function setPreloadManager(PreloadManagerInterface $preloadManager): self
    {
        $this->preloadManager = $preloadManager;

return $this;
    }

/**
     * Return the preload manager
     *
     * @return  PreloadManagerInterface
     *
     * @since   4.0.0
     */
    public function getPreloadManager(): PreloadManagerInterface
    {
        return $this->preloadManager;
    }

/**
     * Set WebAsset manager
     *
     * @param   WebAssetManager  $webAsset  The WebAsset instance
     *
     * @return  Document
     *
     * @since   4.0.0
     */
    public function setWebAssetManager(WebAssetManager $webAsset): self
    {
        $this->webAssetManager = $webAsset;

return $this;
    }

/**
     * Return WebAsset manager
     *
     * @return  WebAssetManager
     *
     * @since   4.0.0
     */
    public function getWebAssetManager(): WebAssetManager
    {
        return $this->webAssetManager;
    }

/**
     * Sets the base URI of the document
     *
     * @param   string  $base  The base URI to be set
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setBase($base)
    {
        $this->base = $base;

return $this;
    }

/**
     * Return the base URI of the document.
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getBase()
    {
        return $this->base;
    }

/**
     * Sets the description of the document
     *
     * @param   string  $description  The description to set
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setDescription($description)
    {
        $this->description = $description;

return $this;
    }

/**
     * Return the description of the document.
     *
     * @return  string
     *
     * @since    1.7.0
     */
    public function getDescription()
    {
        return $this->description;
    }

/**
     * Sets the document link
     *
     * @param   string  $url  A url
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setLink($url)
    {
        $this->link = $url;

return $this;
    }

/**
     * Returns the document base url
     *
     * @return string
     *
     * @since   1.7.0
     */
    public function getLink()
    {
        return $this->link;
    }

/**
     * Sets the document generator
     *
     * @param   string  $generator  The generator to be set
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setGenerator($generator)
    {
        $this->_generator = $generator;

return $this;
    }

/**
     * Returns the document generator
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getGenerator()
    {
        return $this->_generator;
    }

/**
     * Sets the document modified date
     *
     * @param   string|Date  $date  The date to be set
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     * @throws  \InvalidArgumentException
     */
    public function setModifiedDate($date)
    {
        if (!\is_string($date) && !($date instanceof Date)) {
            throw new \InvalidArgumentException(
                \sprintf(
                    'The $date parameter of %1$s must be a string or a %2$s instance, a %3$s was given.',
                    __METHOD__ . '()',
                    Date::class,
                    \is_object($date) ? (\get_class($date) . ' instance') : \gettype($date)
                )
            );
        }

$this->_mdate = $date;

return $this;
    }

/**
     * Returns the document modified date
     *
     * @return  string|Date
     *
     * @since   1.7.0
     */
    public function getModifiedDate()
    {
        return $this->_mdate;
    }

/**
     * Sets the document MIME encoding that is sent to the browser.
     *
     * This usually will be text/html because most browsers cannot yet
     * accept the proper mime settings for XHTML: application/xhtml+xml
     * and to a lesser extent application/xml and text/xml. See the W3C note
     * ({@link https://www.w3.org/TR/xhtml-media-types/
     * https://www.w3.org/TR/xhtml-media-types/}) for more details.
     *
     * @param   string   $type  The document type to be sent
     * @param   boolean  $sync  Should the type be synced with HTML?
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     *
     * @link    https://www.w3.org/TR/xhtml-media-types/
     */
    public function setMimeEncoding($type = 'text/html', $sync = true)
    {
        $this->_mime = strtolower($type);

// Syncing with metadata
        if ($sync) {
            $this->setMetaData('content-type', $type . '; charset=' . $this->_charset, true);
        }

return $this;
    }

/**
     * Return the document MIME encoding that is sent to the browser.
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function getMimeEncoding()
    {
        return $this->_mime;
    }

/**
     * Sets the line end style to Windows, Mac, Unix or a custom string.
     *
     * @param   string  $style  "win", "mac", "unix" or custom string.
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setLineEnd($style)
    {
        switch ($style) {
            case 'win':
                $this->_lineEnd = "\15\12";
                break;
            case 'unix':
                $this->_lineEnd = "\12";
                break;
            case 'mac':
                $this->_lineEnd = "\15";
                break;
            default:
                $this->_lineEnd = $style;
        }

return $this;
    }

/**
     * Returns the lineEnd
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function _getLineEnd()
    {
        return $this->_lineEnd;
    }

/**
     * Sets the string used to indent HTML
     *
     * @param   string  $string  String used to indent ("\11", "\t", '  ', etc.).
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function setTab($string)
    {
        $this->_tab = $string;

return $this;
    }

/**
     * Returns a string containing the unit for indenting HTML
     *
     * @return  string
     *
     * @since   1.7.0
     */
    public function _getTab()
    {
        return $this->_tab;
    }

/**
     * Load a renderer
     *
     * @param   string  $type  The renderer type
     *
     * @return  RendererInterface
     *
     * @since   1.7.0
     * @throws  \RuntimeException
     */
    public function loadRenderer($type)
    {
        return $this->factory->createRenderer($this, $type);
    }

/**
     * Parses the document and prepares the buffers
     *
     * @param   array  $params  The array of parameters
     *
     * @return  Document instance of $this to allow chaining
     *
     * @since   1.7.0
     */
    public function parse($params = [])
    {
        return $this;
    }

/**
     * Outputs the document
     *
     * @param   boolean  $cache   If true, cache the output
     * @param   array    $params  Associative array of attributes
     *
     * @return  string  The rendered data
     *
     * @since   1.7.0
     */
    public function render($cache = false, $params = [])
    {
        $app = CmsFactory::getApplication();

if ($mdate = $this->getModifiedDate()) {
            if (!($mdate instanceof Date)) {
                $mdate = new Date($mdate);
            }

$app->modifiedDate = $mdate;
        }

$app->mimeType = $this->_mime;
        $app->charSet  = $this->_charset;

// Handle preloading for configured assets in web applications
        if ($app instanceof AbstractWebApplication) {
            $this->preloadAssets();
        }

return '';
    }

/**
     * Generate the Link header for assets configured for preloading
     *
     * @return  void
     *
     * @since   4.0.0
     */
    protected function preloadAssets()
    {
        // Process stylesheets first
        foreach ($this->_styleSheets as $link => $properties) {
            if (empty($properties['options']['preload'])) {
                continue;
            }

foreach ($properties['options']['preload'] as $preloadMethod) {
                // Make sure the preload method is supported, special case for `dns-prefetch` to convert it to the right method name
                if ($preloadMethod === 'dns-prefetch') {
                    $this->getPreloadManager()->dnsPrefetch($link);
                } elseif (\in_array($preloadMethod, $this->preloadTypes)) {
                    $this->getPreloadManager()->$preloadMethod($link);
                } else {
                    throw new \InvalidArgumentException(\sprintf('The "%s" method is not supported for preloading.', $preloadMethod), 500);
                }
            }
        }

// Now process scripts
        foreach ($this->_scripts as $link => $properties) {
            if (empty($properties['options']['preload'])) {
                continue;
            }

// Check if the manager's provider has links, if so add the Link header
        if ($links = $this->getPreloadManager()->getLinkProvider()->getLinks()) {
            CmsFactory::getApplication()->setHeader('Link', (new HttpHeaderSerializer())->serialize($links));
        }
    }
}